gen_asm_deps.sh: regex fix

Fixed the quantifier that optionally matches a quote before the
filename. This was originally reported in the homebrew project[1].
Note that this fix is different than patch posted there, as there are
some platforms that don't have the quote, so it needs to be included
in the expression optionally.

[1]: https://github.com/mxcl/homebrew/issues/12567#issuecomment-6434000

Change-Id: Ibf2ed93ce169d80932e877f942dc4eeb03867f8b

build/make/gen_asm_deps.sh

@@ -42,7 +42,7 @@ done
 
 [ -n "$srcfile" ] || show_help
 sfx=${sfx:-asm}
-includes=$(LC_ALL=C egrep -i "include +\"?+[a-z0-9_/]+\.${sfx}" $srcfile |
+includes=$(LC_ALL=C egrep -i "include +\"?[a-z0-9_/]+\.${sfx}" $srcfile |
            perl -p -e "s;.*?([a-z0-9_/]+.${sfx}).*;\1;")
 #" restore editor state
 for inc in ${includes}; do